Помогите пожалуйста!!!!! Раскройте скобки, употребляя гла¬голы в одном из следующих времен: Present Perfect, Present

1. They\'ve been working there for three hours already. 2. They\'ve been playing since breakfast time. 3. She has been doing her homework for two hours already; but she hasn\'t not yet done half of it. 4. I\'ve been waiting for you since two o\'clock. 5. I have already read sixty pages. 6. He has been writing books since he was a young man. He has already written eight books. 7. Today she has been helping her mother since morning. They have already washed the floor and dusted the furniture. 8. Have you found your notebook? — No! I\'ve been still looking for it. I\'ve already looked for it for two hours, but haven\'t yet found it. 9. You have been playing with a ball for three hours already. Go home and do your homework. 10. Wake up! You\'ve been sleeping for ten hours already.